"I'm working hard, but nothing changes."
I've felt that way ever since I started working.
My monthly salary doesn't increase.
My savings and assets don't grow.
It feels like my effort isn't being rewarded.
To be honest, I almost gave up many times.
But that's not it.
The issue isn't the amount of effort you're putting in; it's just that you don't know about "compound interest."
What is Compound Interest?
Compound interest is a mechanism where interest is earned on interest.
Let's use money as an example.
If it's hard to understand,
think of it like this:
Suppose you invest 1 million yen at an annual interest rate of 10%.
In the case of "simple interest," it only increases by 100,000 yen every year.
1 year later: 1.1 million yen
5 years later: 1.5 million yen
20 years later: 3 million yen
In the case of "compound interest," interest is also earned on the increased amount.
1 year later: 1.1 million yen
5 years later: 1.61 million yen
20 years later: approx. 6.73 million yen
Investing the same 1 million yen at the same 10% annual rate creates a difference of more than double between simple and compound interest.
Moreover, this gap widens the more time passes.
This is the true nature of compound interest.
And compound interest is a system where
those who learn about it early have an overwhelming advantage.
People who continue "1% a day" become 37 times better after a year
Compound interest isn't just about money.
The exact same law applies to effort and habits.
If you continue to improve by 1.01 times every day—just 1% better than yesterday—for 365 days:
1.01 to the power of 365 = approx. 37.8 times
Conversely, if you slack off by 1% every day (0.99 times):
0.99 to the power of 365 = approx. 0.03 times
You become almost zero in a year.
A difference of just 1% every day results in a world of difference—37 times vs. 0.03 times—after one year.
You might think, "1% a day is impossible."
But 1% is something like this:
- Going to bed 5 minutes earlier than today
- Reading one more page of a book than today
- Creating one more post than today
That's all it takes.
This accumulates, and in a year, you'll be 37 times the person you are now.
The difference between those who live without knowing and those who don't
Stock index investing has grown at an average annual compound rate of 6-7% for over 100 years.
If you invest 1 million yen at a 7% annual compound rate:
10 years later: approx. 1.97 million yen
20 years later: approx. 3.87 million yen
30 years later: approx. 7.61 million yen
Even though you haven't done anything yourself,
time automatically increases your money.
Conversely, what happens to those who don't use compound interest?
If you just leave it in a bank, the current ordinary deposit interest rate in Japan is about 0.3% per year.
Even if you deposit 1 million yen for 30 years,
it only increases by about 90,000 yen.
Spending the same 30 years results in a difference of 6.52 million yen.
This difference is born simply from "whether you know it or not."
Talent has nothing to do with it.
The amount of effort has nothing to do with it.
Only "knowledge" and "time" become your weapons.
Ice melts the moment it exceeds 0 degrees
This is the most important story for
understanding compound interest.
Even if you warm ice from -30 degrees to
-1 degree, it doesn't change at all.
From the outside, it looks like
"nothing has changed."
But
the moment it exceeds 0 degrees, it suddenly starts to melt.
Dieting, side hustles, SNS, and investing are all the same.
There is a plateau period where no visible change occurs no matter how much you continue.
But one day, a breakthrough suddenly comes.
The problem is giving up before that breakthrough arrives.
Both those who pass the University of Tokyo entrance exam and those who fail have the same goal: "to pass."
The difference lies only in
whether they have the "habit of studying every day."
Even if you have a goal,
it's meaningless if you don't have the habit.
People whose habits accumulate through compound interest suddenly look like "changed people" one day.
But in reality,
compound interest was just accumulating where it couldn't be seen.
Turning effort into "fun" accelerates compound interest
There is an experiment from Stanford University.
They started giving "gold stickers (rewards)"
to children who were already enjoying drawing spontaneously.
When they stopped giving the rewards,
the children stopped drawing.
When you work for a reward,
the brain mistakenly thinks,
"This activity isn't fun; I'm only doing it for the reward."
The characteristic of people who build up through compound interest is that they can find meaning in the process itself.
"I'm happy because the post went viral" changes to "I like the process of creating the post."
The moment that happens, effort naturally continues.
In terms of neuroscience,
when dopamine starts to be released from
the process of effort itself,
you can enter a state of "effort addiction."
Which one lasts:
a diet where you endure for a cheat day, or
a diet where you like eating and naturally choose healthy meals?
You don't even have to think about it.
"Negative Compound Interest" lurking in daily life
Compound interest can be an ally or an enemy.
Variable interest rates on mortgages are also compound interest.
If you borrow 50 million yen at an interest rate of 0.7%, it's about 134,000 yen per month.
But if the interest rate rises to 2% after 10 years, it jumps to about 157,000 yen per month, and the total payment increases by more than 6 million yen.
Smartphone batteries are also negative compound interest.
Minute degradation accumulates with each charge, and after 500 charges, the capacity drops to 80%.
Negative compound interest is quietly accumulating in even more familiar parts of daily life.
- Daily convenience store stops (8,000 yen/month x 12 months x 10 years = 960,000 yen)
- Unused subscriptions (3,000 yen/month x 12 months x 10 years = 360,000 yen)
- Aimlessly scrolling on your phone at night (2 hours/day x 365 days x 10 years = 7,300 hours)
Each one is small, but when they accumulate through compound interest, they become an irreversible difference after 10 years.
If you're not conscious of it, compound interest will always work as an "enemy."
Why I was able to build 40 million yen in assets in 4 years
Let me talk a little about myself here.
Former nurse, now 29 years old.
Until a few years ago, my take-home pay was 200,000 yen, and I was afraid to look at my ATM balance.
Three days before payday, I was too scared to open my wallet and would spend 30 seconds agonizing over whether to buy a sandwich at the convenience store.
That's when I started a side hustle.
For the first three months, my followers only increased by 50.
Earnings were almost zero.
"Maybe I'm not cut out for this."
"Maybe only talented people can make money."
"Maybe it's impossible for me."
I almost gave up many times.
But I continued.
Because I knew about compound interest.
Because I knew that ice doesn't change until it exceeds 0 degrees. Because I knew that breakthroughs only come to those who don't give up.
Things started moving a bit in the third month, and it grew rapidly after six months.
After a year, I exceeded 100,000 yen a month.
From there, in four years, I now exceed 700,000 yen a month from my side hustle alone, and my assets have reached 40 million yen.
It wasn't because I had talent.
It wasn't because I had a high educational background.
I just believed in compound interest and continued.
- You feel like you're working hard but nothing is changing.
- You're interested in a side hustle but don't know where to start.
- You're vaguely afraid that time is just passing by.
If you have these feelings, they are correct.
Time is passing by with compound interest at this very moment.
I was able to change not because of talent, but because I knew the "right way" and kept moving.
I can give you that first step right now.
I'm currently giving away the SNS side hustle know-how I've built up over four years for free.
[What you can receive]
- X algorithm strategy
- Affiliate mechanisms that even beginners can start right now
- "Templates" for viral posts and how to adapt them
- How to choose projects to reach 5,000 yen a month in the shortest time
No blog or product required.
I made it so you can start today just by imitating.
As the first step to making compound interest your ally, please receive it now. ↓
https://lin.ee/l1cXDqh
People who act by age 30 and those who don't
The scary thing about compound interest is that the difference starts the "moment you begin."
The difference between someone who starts today and someone who starts next month looks small now.
But that difference, accumulated through compound interest 10 years later, will be like heaven and earth.
Those who know and those who don't.
Those who acted and those who didn't.
That difference will appear all at once in 10 years.
Whether you move today will change the scenery 10 years from now.
